CVE-2026-21259 Microsoft Excel Elevation of Privilege Vulnerability
Published February 12, 2026
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to elevate privileges locally.
Published February 12, 2026
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to elevate privileges locally.
Published February 12, 2026
Server-side request forgery (ssrf) in Azure DevOps Server allows an authorized attacker to perform spoofing over a network.
Published February 12, 2026
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Published February 12, 2026
Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
Published February 12, 2026
Use after free in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.
Published February 12, 2026
External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing locally.
Published February 12, 2026
A heap‑based buffer overflow exists in libjpeg‑turbo’s h2v2_merged_upsample_internal() function when processing 12‑bit lossless JPEG images. An attacker could craft an image containing out‑of‑range 12‑bit samples that, when decompressed with merged upsampling enabled, may trigger a segmentation fault or buffer overflow, resulting in an application crash.
Published February 12, 2026
Null pointer dereference in Windows LDAP – Lightweight Directory Access Protocol allows an unauthorized attacker to deny service over a network.
Published February 12, 2026
Improper access control in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Published February 12, 2026
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